现代教育中，普通教育与职业教育日趋分化。

按要求完成下列练习。    

l．默写古诗《示儿》，并用自己的话填空。   

    __________________，________________。

    __________________，________________。  

从这首诗中，我们懂得了诗人一生的遗憾是____                        ， 他对孩子的嘱咐是____               。    

2．《闻官军收河南河北》是唐朝诗人杜甫写的一首诗，他还写了《春夜喜雨》、《江畔独步寻花》、《绝句》（两个黄鹂鸣翠柳）等诗篇，请你从中选择一首写下来。

在空气中燃烧既能生成二氧化碳，又能生成水的物质是（　　）

A．木炭

B．甲烷

C．氢气

D．硫

未经国家批准，各地区、各部门不得违反建设程序，擅自审批和开工建设燃煤火电项目。当前，尤其要严格禁止违规建设( )万kW及以下的火电机组。

A．13

B．13.5

C．14

D．14.5

The ABC Bank Irrevocable documentary credit Number: LC123-258866 Date: August 24,1999 Date and place of expiry : October 30, 1999 China Advising bank: Bank of China Beneficiary: China XYZ import and export corp. Applicant: UVW corporation. Amount: USD52,500 (Say U.S Dollars fifty two thousand five hundred only) We hereby issue irrevocable documentary credit which is available with: Any bank By negotiation of beneficiary’s drafts at sight For full invoice value Drawn on the ABC bank Partial shipments: Not allowed Transshipment: Not allowed Shipment from: Shanghai To: Tokyo Japan At the latest: October 15, 1999 Following documents required: +Signed commercial invoice in three copies +Full set of clean on board ocean bill of lading +Weight certificate in two copies Covering: 100 metric tons (5PCT MOL) of XY chemical in drums at USD 500 per M/T. Special instructions: Insurance to be effected by buyer. Instructions to advising bank: Please advise this credit to the beneficiary We hereby undertake that drawers, endorsers in compliance with the terms of this credit will be duly honored upon presentation to the drawee bank. Authorized signature 一、根据上述信用证，回答下列问题

装船期限

样冲尖角一般磨成（）。

A、30°～40°

B、40°～50°

C、50°～60°

D、45°～60°